<template>
    <div class="popupSelect-container">
      <div class="el-select" @click.stop="openDialog">
        <div class="el-select__tags" v-if="multiple" ref="tags"
          :style="{ 'max-width': inputWidth - 32 + 'px', width: '100%', cursor: 'pointer' }">
          <span v-if="collapseTags && tagsList.length">
            <el-tag :closable="!selectDisabled" :size="collapseTagSize" type="info" @close="deleteTag($event, 0)"
              disable-transitions>
              <span class="el-select__tags-text">{{ tagsList[0].fullName }}</span>
            </el-tag>
            <el-tag v-if="tagsList.length > 1" :closable="false" type="info" disable-transitions>
              <span class="el-select__tags-text">+ {{ tagsList.length - 1 }}</span>
            </el-tag>
          </span>
          <transition-group @after-leave="resetInputHeight" v-if="!collapseTags">
            <el-tag v-for="(item, i) in tagsList" :key="item.id" :size="collapseTagSize" :closable="!selectDisabled"
              type="info" @close="deleteTag($event, i)" disable-transitions>
              <span class="el-select__tags-text">{{ item.fullName }}</span>
            </el-tag>
          </transition-group>
        </div>
        <el-input ref="reference" v-model="innerValue" type="text" :placeholder="currentPlaceholder"
          :disabled="selectDisabled" readonly :validate-event="false" :tabindex="(multiple) ? '-1' : null"
          @mouseenter.native="inputHovering = true" @mouseleave.native="inputHovering = false">
          <template slot="suffix">
            <i v-show="!showClose" :class="['el-select__caret', 'el-input__icon', 'el-icon-arrow-up']"></i>
            <i v-if="showClose" class="el-select__caret el-input__icon el-icon-circle-close"
              @click="handleClearClick"></i>
          </template>
        </el-input>
      </div>
      <el-dialog title="选择用户" :close-on-click-modal="false" :visible.sync="visible"
        class="WORKFLOW-dialog WORKFLOW-dialog_center transfer-dialog" lock-scroll append-to-body width="800px"
        :modal-append-to-body="false" @close="onClose">
        <div class="transfer__body">
          <div class="transfer-pane">
            <div class="transfer-pane__tools">
              <el-input placeholder="请输入关键词查询" v-model="keyword" @keyup.enter.native="getData" clearable
                class="search-input">
                <el-button slot="append" icon="el-icon-search" @click="getData"></el-button>
              </el-input>
            </div>
            <div class="transfer-pane__body">
              <el-tabs v-model="activeName" class="transfer-pane__body-tab">
                <el-tab-pane label="全部数据" name="all">
                  <el-tree :data="treeData" :props="props" ref="selectTree1" :show-checkbox="true" check-on-click-node
                    @node-click="handleNodeClick" @check-change="checkChange" class="WORKFLOW-common-el-tree" node-key="id"
                    v-loading="loading" lazy :load="loadNode">
                    <span class="custom-tree-node" slot-scope="{ node, data }">
                      <i :class="data.icon"></i>
                      <span class="text">{{ node.label }}</span>
                    </span>
                  </el-tree>
                </el-tab-pane>
                <el-tab-pane label="当前组织" name="department">
                  <el-tree :data="treeData2" :props="props" ref="selectTree2" :show-checkbox="true"
                    :expand-on-click-node="false" check-on-click-node @node-click="handleNodeClick2"
                    @check-change="checkChange" class="WORKFLOW-common-el-tree" node-key="id" v-loading="loading">
                    <span class="custom-tree-node" slot-scope="{ node }">
                      <i class="icon-ym icon-ym-tree-user2"></i>
                      <span class="text">{{ node.label }}</span>
                    </span>
                  </el-tree>
                </el-tab-pane>
                <el-tab-pane label="我的下属" name="subordinates">
                  <el-tree :data="treeData3" :props="props" :expand-on-click-node="false" ref="selectTree3"
                    :show-checkbox="true" check-on-click-node @node-click="handleNodeClick2" @check-change="checkChange"
                    class="WORKFLOW-common-el-tree" node-key="id" v-loading="loading">
                    <span class="custom-tree-node" slot-scope="{ node }">
                      <i class="icon-ym icon-ym-tree-user2"></i>
                      <span class="text">{{ node.label }}</span>
                    </span>
                  </el-tree>
                </el-tab-pane>
              </el-tabs>
            </div>
          </div>
          <div class="transfer-pane">
            <div class="transfer-pane__tools">
              <span>已选</span>
              <el-button @click="removeAll" type="text">清空列表</el-button>
            </div>
            <div class="transfer-pane__body shadow right-pane">
              <template>
                <div v-for="(item, index) in selectedData" :key="index" class="selected-item">
                  <span>{{ item.fullName }}</span>
                  <i class="el-icon-delete" @click="removeData(index)"></i>
                </div>
              </template>
            </div>
          </div>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="visible = false">{{ $t('common.cancelButton') }}</el-button>
          <el-button type="primary" @click="confirm">{{ $t('common.confirmButton') }}</el-button>
        </span>
      </el-dialog>
    </div>
  </template>

  <script>
  import { getImUserSelector, getUserInfoList, getSubordinates, getOrganization } from '@/api/permission/user'
  import { addResizeListener, removeResizeListener } from 'element-ui/src/utils/resize-event';
  export default {
    name: 'userSelect',
    inject: {
      elForm: {
        default: ''
      },
      elFormItem: {
        default: ''
      }
    },
    props: {
      value: {
        type: [String, Array],
        default: ''
      },
      placeholder: {
        type: String,
        default: '请选择'
      },
      disabled: {
        type: Boolean,
        default: false
      },
      multiple: {
        type: Boolean,
        default: false
      },
      collapseTags: {
        type: Boolean,
        default: false
      },
      clearable: {
        type: Boolean,
        default: true
      },
      size: String,
    },
    data() {
      return {
        visible: false,
        keyword: '',
        activeName: '',
        nodeId: '',
        innerValue: '',
        loading: false,
        props: {
          children: 'children',
          label: 'fullName',
          isLeaf: 'isLeaf',
          disabled: (data) => {
            //return data.children && data.children != null && data.children.length > 0 ? true : false
            return data.hasChildren ? true : false
          }
        },
        treeData: [],
        treeData2: [],
        treeData3: [],
        selectedData: [],
        tagsList: [],
        inputHovering: false,
        inputWidth: 0,
        initialInputHeight: 0,
      }
    },
    watch: {
      value(val) {
        this.setDefault()
      },
      selectDisabled() {
        this.$nextTick(() => {
          this.resetInputHeight();
        });
      },
      activeName(val) {
        this.keyword = ''
        if (!val) return
        this.nodeId = '0'
        this.treeData = []
        this.treeData2 = []
        this.treeData3 = []
        this.getData()
      },
    },
    computed: {
      showClose() {
        let hasValue = this.multiple
          ? Array.isArray(this.value) && this.value.length > 0
          : this.value !== undefined && this.value !== null && this.value !== '';
        let criteria = this.clearable &&
          !this.selectDisabled &&
          this.inputHovering &&
          hasValue;
        return criteria;
      },
      currentPlaceholder() {
        if (this.multiple && Array.isArray(this.value) && this.value.length) {
          return ''
        } else {
          return this.placeholder
        }
      },
      selectDisabled() {
        return this.disabled || (this.elForm || {}).disabled;
      },
      _elFormItemSize() {
        return (this.elFormItem || {}).elFormItemSize;
      },
      selectSize() {
        return this.size || this._elFormItemSize || (this.$ELEMENT || {}).size;
      },
      collapseTagSize() {
        return ['small', 'mini'].indexOf(this.selectSize) > -1
          ? 'mini'
          : 'small';
      },
      userInfo() {
        return this.$store.getters.userInfo
      },
    },
    created() {
      this.setDefault()
    },

    mounted() {
      addResizeListener(this.$el, this.handleResize);

      const reference = this.$refs.reference;
      if (reference && reference.$el) {
        const sizeMap = {
          medium: 36,
          small: 32,
          mini: 28
        };
        const input = reference.$el.querySelector('input');
        this.initialInputHeight = input.getBoundingClientRect().height || sizeMap[this.selectSize];
      }
      if (this.multiple) {
        this.resetInputHeight();
      }
      this.$nextTick(() => {
        if (reference && reference.$el) {
          this.inputWidth = reference.$el.getBoundingClientRect().width;
        }
      });
      this.setDefault()
    },
    beforeDestroy() {
      if (this.$el && this.handleResize) removeResizeListener(this.$el, this.handleResize);
    },
    methods: {
      cbClickHandle(data) {
        if (!this.multiple) {
          this.$refs.selectTree1.setCheckedKeys([], false)
          this.$refs.selectTree2.setCheckedKeys([], false)
          this.$refs.selectTree3.setCheckedKeys([], false)
          this.$refs.selectTree1.setCheckedKeys([data.id], false)
          this.$refs.selectTree2.setCheckedKeys([data.id], false)
          this.$refs.selectTree3.setCheckedKeys([data.id], false)
        }
      },
      onClose() {
        this.activeName = ''
      },
      openDialog() {
        if (this.selectDisabled) return
        this.visible = true
        this.activeName = 'all'
        this.keyword = ''
        this.nodeId = '0'
        this.selectedData = []
        this.setDefault()
      },
      confirm() {
        if (this.multiple) {
          this.innerValue = ''
          this.tagsList = JSON.parse(JSON.stringify(this.selectedData))
          let selectedIds = this.selectedData.map(o => o.id)
          this.$emit('input', selectedIds)
          this.$emit('change', selectedIds, this.selectedData)
        } else {
          if (!this.selectedData.length) {
            this.innerValue = ''
            this.$emit('input', '')
            this.$emit('change', '', {})
            return
          }
          this.innerValue = this.selectedData[0].fullName
          let selectedIds = this.selectedData.map(o => o.id)
          this.$emit('input', selectedIds[0])
          this.$emit('change', selectedIds[0], this.selectedData[0])
        }
        this.visible = false
      },
      setDefault() {
        if (!this.value || !this.value.length) {
          this.innerValue = ''
          this.selectedData = []
          this.tagsList = []
          return
        }
        const arr = this.multiple ? this.value : [this.value]
        getUserInfoList(arr).then(res => {
          this.selectedData = res.data.list
          if (this.multiple) {
            this.innerValue = ''
            this.tagsList = JSON.parse(JSON.stringify(this.selectedData))
          } else {
            this.innerValue = this.selectedData.length ? this.selectedData[0].fullName : ''
          }
          this.$nextTick(() => {
            if (this.multiple) {
              this.resetInputHeight();
            }
          });
        })
      },
      getData() {

        if (this.activeName === 'all') {
          this.getAllList()
        } else if (this.activeName === 'department') {

          this.loading = true
          getOrganization({ keyword: this.keyword, organizeId: '0' }).then(res => {
            this.treeData2 = res.data
            this.loading = false
            this.$nextTick(() => {
              let ids = this.selectedData.map((item) => {
                return item.id
              })
              // this.$refs.selectTree1.setCheckedKeys(ids, false)
              this.$refs.selectTree2.setCheckedKeys(ids, false)
              // this.$refs.selectTree3.setCheckedKeys(ids, false)
            })
          })
        } else {
          this.loading = true
          getSubordinates(this.keyword).then(res => {
            this.treeData3 = res.data
            this.loading = false
            this.$nextTick(() => {
              let ids = this.selectedData.map((item) => {
                return item.id
              })

              this.$refs.selectTree3.setCheckedKeys(ids, false)
            })
          })
        }

      },
      getAllList() {
        this.loading = true
        //if (this.keyword) this.nodeId = '0';
        // 普通员工改为只获取当前组织下的数据 超级管理员获取全部数据 by xyb
        if (this.userInfo.administrator) {
          this.nodeId = '0';
        } else {
          this.nodeId = this.userInfo.organizeId
        }

        getImUserSelector(this.nodeId, this.keyword).then(res => {
          this.treeData = res.data.list
          this.loading = false
          this.$nextTick(() => {
            let ids = this.selectedData.map((item) => {
              return item.id
            })
            this.$refs.selectTree1.setCheckedKeys(ids, false)
          })
        })
      },
      loadNode(node, resolve) {
        if (node.level === 0) {
          this.nodeId = '0'
          return resolve(this.treeData)
        }
        this.nodeId = node.data.id
        getImUserSelector(this.nodeId).then(res => {
          resolve(res.data.list)
        })
      },
      checkChange(data, status) {
        if (data.type !== 'user') return
        if (status) {
          this.handleNodeClick2(data)
        } else {
          this.removeData2(data);
        }

      },
      handleNodeClick(data) {
        // if (data.type !== 'user') return
        // this.handleNodeClick2(data)

      },
      handleNodeClick2(data) {

        const boo = this.selectedData.some(o => o.id === data.id)
        if (boo) return
        const item = {
          id: data.id,
          fullName: data.fullName
        }
        // this.multiple ? this.selectedData.push(item) : this.selectedData = [item]
        this.multiple ? this.selectedData.push(data) : this.selectedData = [data]
        this.cbClickHandle(data);
      },
      removeAll() {
        this.selectedData = []
        this.$refs.selectTree1.setCheckedKeys([], false)
        this.$refs.selectTree2.setCheckedKeys([], false)
        this.$refs.selectTree3.setCheckedKeys([], false)
      },
      removeData(index) {
        this.selectedData.splice(index, 1);
        let ids = this.selectedData.map((item) => {
          return item.id
        })
        this.$refs.selectTree1.setCheckedKeys(ids, false)
        this.$refs.selectTree2.setCheckedKeys(ids, false)
        this.$refs.selectTree3.setCheckedKeys(ids, false)
        // this.$refs.tree.setChecked(5, true)
      },
      removeData2(data) {
        let checkedData = this.selectedData.filter((item) => {
          return item.id != data.id;
        })
        this.selectedData = checkedData;
      },
      deleteTag(event, index) {
        this.selectedData.splice(index, 1)
        this.confirm()
        event.stopPropagation();
      },
      handleClearClick(event) {
        this.selectedData = []
        this.confirm()
        event.stopPropagation();
      },
      resetInputWidth() {
        this.inputWidth = this.$refs.reference.$el.getBoundingClientRect().width;
      },
      handleResize() {
        this.resetInputWidth();
        if (this.multiple) this.resetInputHeight();
      },
      resetInputHeight() {
        if (this.collapseTags) return;
        this.$nextTick(() => {
          if (!this.$refs.reference) return;
          let inputChildNodes = this.$refs.reference.$el.childNodes;
          let input = [].filter.call(inputChildNodes, item => item.tagName === 'INPUT')[0];
          const tags = this.$refs.tags;
          const tagsHeight = tags ? Math.round(tags.getBoundingClientRect().height) : 0;
          const sizeInMap = this.initialInputHeight || 40;
          input.style.height = this.selectedData.length === 0
            ? sizeInMap + 'px'
            : Math.max(
              tags ? (tagsHeight + (tagsHeight > sizeInMap ? 6 : 0)) : 0,
              sizeInMap
            ) + 'px';
        });
      },
      resetInputWidth() {
        this.inputWidth = this.$refs.reference.$el.getBoundingClientRect().width;
      },
      handleResize() {
        this.resetInputWidth();
        if (this.multiple) this.resetInputHeight();
      }
    },
  }
  </script>
  <style lang="scss" scoped>
  ::v-deep .el-tree .el-checkbox.is-disabled {
    display: none;
  }
  </style>
